Chemical path to polyurethane polymer used in creation of spandex. Spandex is principally made up of a polyurea derived through the reaction of a diol and a diisocyanate. Two courses of spandex are defined with the "macrodiols". 1 course of macrodiols will be the oligomer manufactured from tetrahydrofuran (i. In https://bobv730egh0.bloggactif.com/profile